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 * Copyright (c) 2006,2007,2008, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

// All of the functions in this file should move to new homes and this file
// should be deleted.

#ifndef SKY_ENGINE_PLATFORM_GRAPHICS_SKIA_SKIAUTILS_H_
#define SKY_ENGINE_PLATFORM_GRAPHICS_SKIA_SKIAUTILS_H_

#include "flutter/sky/engine/platform/PlatformExport.h"
#include "flutter/sky/engine/platform/geometry/FloatRect.h"
#include "flutter/sky/engine/platform/graphics/Color.h"
#include "flutter/sky/engine/platform/graphics/GraphicsTypes.h"
#include "flutter/sky/engine/platform/transforms/AffineTransform.h"
#include "flutter/sky/engine/wtf/MathExtras.h"
#include "third_party/skia/include/core/SkMatrix.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "third_party/skia/include/core/SkPath.h"
#include "third_party/skia/include/core/SkRefCnt.h"

namespace blink {

class GraphicsContext;

SkBlendMode PLATFORM_EXPORT
    WebCoreCompositeToSkiaComposite(CompositeOperator,
                                    WebBlendMode = WebBlendModeNormal);

// move this guy into SkColor.h
SkColor SkPMColorToColor(SkPMColor);

inline SkFilterQuality WebCoreInterpolationQualityToSkFilterQuality(
    InterpolationQuality quality) {
  // FIXME: this reflects existing client mappings, but should probably
  // be expanded to map higher level interpolations more accurately.
  return quality != InterpolationNone ? kLow_SkFilterQuality
                                      : kNone_SkFilterQuality;
}

// Skia has problems when passed infinite, etc floats, filter them to 0.
inline SkScalar WebCoreFloatToSkScalar(float f) {
  return SkFloatToScalar(std::isfinite(f) ? f : 0);
}

inline SkScalar WebCoreDoubleToSkScalar(double d) {
  return SkDoubleToScalar(std::isfinite(d) ? d : 0);
}

inline SkRect WebCoreFloatRectToSKRect(const FloatRect& rect) {
  return SkRect::MakeLTRB(SkFloatToScalar(rect.x()), SkFloatToScalar(rect.y()),
                          SkFloatToScalar(rect.maxX()),
                          SkFloatToScalar(rect.maxY()));
}

inline bool WebCoreFloatNearlyEqual(float a, float b) {
  return SkScalarNearlyEqual(WebCoreFloatToSkScalar(a),
                             WebCoreFloatToSkScalar(b));
}

inline SkPath::FillType WebCoreWindRuleToSkFillType(WindRule rule) {
  return static_cast<SkPath::FillType>(rule);
}

// Determine if a given WebKit point is contained in a path
bool PLATFORM_EXPORT SkPathContainsPoint(const SkPath&,
                                         const FloatPoint&,
                                         SkPath::FillType);

SkMatrix PLATFORM_EXPORT affineTransformToSkMatrix(const AffineTransform&);

bool nearlyIntegral(float value);

InterpolationQuality limitInterpolationQuality(const GraphicsContext*,
                                               InterpolationQuality resampling);

InterpolationQuality computeInterpolationQuality(const SkMatrix&,
                                                 float srcWidth,
                                                 float srcHeight,
                                                 float destWidth,
                                                 float destHeight,
                                                 bool isDataComplete = true);

bool shouldDrawAntiAliased(const GraphicsContext*, const SkRect& destRect);

}  // namespace blink

#endif  // SKY_ENGINE_PLATFORM_GRAPHICS_SKIA_SKIAUTILS_H_
